Disk-wheel construction



R., C. HOFFMAN. 015K WHEEL CoNsTRUCTloN.v

APPLICATWN HLED lUL! 6. 920.l

Patented Aug. 16,1921.

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Bosma 6. HOFF/M0.

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i To all whom it may concern.'

UNT ai FFE Para

DISK-waant ooNsrRUcTroN.-

Lactose;

Application led July 6,01920.: Serial'N'o. 394,240.

Be it known th'at I, Roscoe C. HOFFMAN, a citizen of the United States, and a resident of Indianapolis, county of Marion, and State of lIndiana, have invented a certain new, and useful Disk-Wheel Construction; and I do hereby declare that the following is a full, clear, and'exact description lthereoi', reference. being had to thel accompanying drawings, Iin which like numerals refer to like parts. Y

This invention relates to the construction of disk wheels for vehicles, and more particularly to the laminated type as set forth in my former Patent No. 1,341,465, issued Mary 25, 1920.

he particular feature of this invention consists in the maiiiierof Ydisposing," the axial or bracing disks with respect Vto-the supporting disk, whereby a supporting disk formed of sheet metal of the same thickness throughout may be reinforced and braced' near the hub-in such a manner that the supporting disk will form(tiie"completc 'outer surface of the wheel, and the smaller bracing disk will be inclosed between said supporting disk and the larger bracing disk. By this manner of'construction a wheel of equal strength and durability to a rolled disk tapering radially from its center, is secured, without the diliculty of manufacture, and will present the saine clean and solid appearance.

The full natu-rect' this invention vwill be understood from the accompanying drawings and the following description and Fig. 1 showing a modifiedform thereof.`

Fig. 8 is the same as Fig. 1 showing a further modii'ied form. Fig. 4 is a radial section through a modified type of disk wheel.

In the drawings there is a portion of a disk wheel having a supporting disk 10, of equal thickness throughout, formed, preferably by stamping, into the shape `of a .disk

wheel with an inwardly turned rim Bange 11l and a hub flange 12 adapted to be engaged by a tapered bolt 13 which secures it rigidly to the hub member '14. In order to re'siliently strengthen and brace the main supporting disk 10, particularly around the hub .and centrally between the hub and rim, there is provided an auxiliary bracing disk 15 having 'substantially the same dish as the Specification of Letters Patent. Patented Aug.

supporting disk, and having a little over half the radius thereof, whichis mounted on the insideA of said supporting disk with its inner hub flange portion 16' rigidly held between the bolt 13 and hub member14 in the same manner as the supporting disk 10. To further strengthenand resiliently brace the supporting disk there is an inside brac# ing disk 17 of about half the radius ofthe disk 15, and of substantially .thesameforin which is clamped into position between the disk 15 and supporting disk 10, adjacent the I latter and spaced from the former by thel spacing member 18. The three disks and the spacing member may be welded or riveted.

together within the hub, if desired, In any suitable manner. The disks 15 and 17 are therewith and secured in position, there will be a spring tension causing an outwardly.

directed force against said supporting disk. By means of this construction the supporting disk is braced against lateral stress and straindirected inwardly, and its outwardly dished form protects it from any distortion or collapsing in that direction. The disk 15 covers and protects the smaller disk 17 and the spacer `18 so that they are hidden from view and protected from the elements.

In Fig. '2 a form of disk wheel is shown differing only from that above described in that there is provided'an annular offset or shoulder 19 in the disk 10 against whichthe periphery of the disk 15 abuts The annuening any lateral and inwardly directed thrust. Y

In Fig. 3 a further modified form is shown wherein the construction is similar to that shown in Fi 2 excepting that the inner` disk 17 is eliminated and supplanted by a spacer 180 of double the thickness of the spacer 18. This construction forms alighter and less expensive type of wheel, but one of less strength than that shown in Fig. 2.

In Fig. 4 a modified form is shown in which the disk 10 is stamped with a plu.

'90- lar shoulder 19 is adapted to limit the movement of the disk 15 so that the disk l5 willV vact in the manner of a brace for'strengthasf -ralty of pockets or iutes 20 so as to form a rim as described in my patent for disk wheel for vehicles No. 1,376,938, issued May nular bearing 23.integral therewith which' telescopes the hub flange. 2l of the disk 1() and has its "outer edge turned back so as to clamp the disk 22 at- 24. The periphery of the disk 150 lies adjacent to and `abats the disk l() at the bend therein, wherein the pockets oi flutes merge into the disk, the disk 150 acting as a-resilient bracing meinber in the same manner as the disks 15 above described, and may, or may Iiotbe welded at 25. .p

The disks 15,517 and 150 as above specified are formed with a lesser dish than the supporting disk l() and, therefore, there is a continuous outward thrust about the periphery of said disks-when theyare secured to the hub members. n

The invention claimed is:

l. A disk type wheel for vehicles including a supporting disk adapted to carry a tire rim about the periphery thereof, an auxiliary bracing disk' mounted adjacent said supporting disk having its outer periphery in engagement therewith, said bracing disk being mounted at an angle to said supporting disk so as to act as an angular brace therefor, and an intermediate disk of less i'adius than said auxiliary bracing disk mounted between said auxiliary disk and supporting disk for further bracing and strengthening said supporting disk near the center portion thereof.

. 2. A disk type of wheel for vehicles in'- cluding a supporting disk adapted to carry` a tire rim about the periphery thereof, an inwardly extending annular shoulder formed in said supporting disk, an auxiliary bracing disk mounted adjacent said supporting Adisk having its outer periphery abutting.

said shoulder, said bracing disk being mounted at anfangle to said supporting disk so as to act as an angular brace there- `for, and an intermediate bracing -disk .mounted between said auxiliary and suping disk mounted adjacent said supporting diskhaving its outer periphery abutting said shoulder, said bracing disk being mounted aty an angle to said supporting diskso as to act as an angular brace therefor, and an intermediate bracing disk mounted between said auxiliary and supporting disks of less radius than said auxiliary disk and having' yits outer periphery bearing against said supporting disk for yfurther strengthening and bracing said 'supporting disk near the center thereof, and means mounted between saidsupporting and auxiliary bracing disk for spacing them apart whereby they will extend'axially at an angle to each other.

4. A disk type of wheel for vehicles in-l 'cluding a supliorting disk adapted to carry a. tire rim about the periphery thereof, an inwardly extending annular shoulder formed in said supporting disk. an auxiliary bracshoulder, said bracing disk being mounted at an angle to said supporting disk and welded thereto about its outer periphery so as to act as an` angular brace therefor, and an intermediate bracing disk mounted between said auxiliary and supporting disks of less radius than said auxiliary disk and having its outer periphery bearing against said supporting disk for further strengthening and bracing said supporting disk near the. center thereof, and means mounted between said supporting aiid auxiliary bracing disk for spacing them apart whereby they will extend axially at an angle to each other. y e i In witness whereof I have hereunto at'iixed my signature.V

' RQSCOE C. HOFFMAN.

GOv

`ing disk mounted :'idjarent said supporting diskhaving its outer periphery abutting said 

